Arcane Blast

Benefit: As a standard action, you can sacrifice a prepared spell or unused spell slot of 1st level or higher and transform it into a ray, targeting any foe within 30 feet as a ranged touch attack. This attack deals 2d6 points of damage plus an additional 1d6 points of damage for every level of the spell or spell slot you sacrificed. 0-level spells may not be sacrificed in this manner.

This is a supernatural ability.

FAQ/Errata

Is using Arcane Blast a spell-like or supernatural ability?

It is a supernatural ability.

Official Update: Page 150, add this sentence to the end of the Arcane Blast feat description: "This is a supernatural ability."